-Cost identification analysis: compares different interventions available for a program to determine which intervention would be the least expensive
-Cost benefit analysis: dollar benefit received from the dollars invested in the program
-Cost effectiveness analysis: quantifies effects of program in monetary terms
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Leadfoot Lou enters the “Rest-to-Rest” auto competition, in which each contestant’s car begins and ends at rest, covering a fixed distance L in as short a time as possible. The intention is to demonstrate driving skills, and to find which car is the best at the total combination of speeding up and slowing down. The course is designed so that maximum speeds of the cars are never reached.
What is the fastest speed Lou’s car ever reaches? Neglect Lou’s reaction time, and answer in terms of a and L.
The cylinder of mass m is held in the equilibrium configuration by means of three light links and a nonlinear spring near E. The spring is uncompressed when link OA is vertical, and the potential energy in the spring is given by , where represents the amount of spring deformation from the uncompressed position and the constant k is related to the stiffness of the spring. As increases, the rod, which is connected at A, slides through the pivoted collar at E and compresses the spring between the collar and the end of the rod. Determine the values of for system equilibrium over the range and state whether the system is stable or unstable in those positions for , b = 600 mm, and m = 2 kg. Assume no mechanical interference for the indicated range of motion.